drm/amdgpu: set sched_hw_submission higher for KIQ (v3)

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KIQ doesn't really use the GPU scheduler.  The base
drivers generally use the KIQ ring directly rather than
submitting IBs.  However, amdgpu_sched_hw_submission
(which defaults to 2) limits the number of outstanding
fences to 2.  KFD uses the KIQ for TLB flushes and the
2 fence limit hurts performance when there are several KFD
processes running.

v2: move some expressions to one line
    change KIQ sched_hw_submission to at least 16
v3: bump to 256

Reviewed-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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This commit is contained in:

Alex Deucher 2017-08-22 16:39:30 -04:00

parent faf5056726

commit eab2c600fc

1 changed files with 12 additions and 4 deletions

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16

drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c

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